<template>
	<div>
		<div class="search">
			<input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
		</div>
		<div 
			class="search-content" 
			ref="search"
			v-show="keyword"
		>
			<ul>
				<li 
					class="search-item border-bottom" 
					v-for="item of list"
					:key="item.id"
					@click="handleCityClick(item.name)"
				>
					{{item.name}}
				</li>
				<li 
					class="search-item border-bottom"
					v-show="hasNoData" 
				>
					没有找到匹配数据
				</li>
			</ul>
		</div>
	</div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default{
	name:'CitySearch',
	props:{
		cities:Object,
	},
	data () {
		return {
			keyword: '',
			list: [],
			timer: null,
		}
	},
	methods:{
		handleCityClick (city) {
			this.changeCity(city)
			this.$router.push('/')
		},
		...mapMutations(['changeCity'])
	},
	computed:{
		hasNoData () {
			return !this.list.length
		}
	},
	watch: {
		keyword () {
			if(this.timer){
				clearTimeout(this.timer)
			}
			if(!this.keyword){
				this.list = []
				return
			}
			this.timer = setTimeout(() => {
				const result = []
				for (let i in this.cities){
					this.cities[i].forEach((value) => {
						if(value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1){
								result.push(value)
						}
					})
				}
				this.list = result
			},100)
		}
	},
	mounted () {
		this.scroll = new Bscroll(this.$refs.search,{
			click:true
		})
	}
}
</script>

<style lang="scss" scoped>
	.search{
		height: .72rem;
		padding: 0 .1rem;
		background: $bgColor;
		.search-input{
			box-sizing: border-box;
			width: 100%;
			height: .62rem;
			padding: 0 .1rem;
			line-height: .62rem;
			text-align: center;
			border-radius: .06rem;
		}
	}
	.search-content{
		z-index: 1;
		overflow: hidden;
		position: absolute;
		top: 1.58rem;
		left: 0;
		right: 0;
		bottom: 0;
		background: #eee;
		.search-item{
			line-height: .62rem;
			padding-left: .2rem;
			color: #666;
			background: #fff;
		}
	}
</style>